wich measurements are great for an aesthetic body?

[Regular Doomer]

for example a guy 6'1 will need to be

15% bf
how many inches arms?
how many inches waist?

is there something optimal already done?

 

[Regular Doomer]

is 15inches arms contracted good enough if you're 15% bf?

 

[Regular Doomer]

is this a good metric? but the range of arms is too wide